crypto/rsa/rsa.h

   1 /* crypto/rsa/rsa.h */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #ifndef HEADER_RSA_H
  60 #define HEADER_RSA_H
  61
  62 #ifdef  __cplusplus
  63 extern "C" {
  64 #endif
  65
  66 #include <openssl/bn.h>
  67 #include <openssl/crypto.h>
  68
  69 #ifdef NO_RSA
  70 #error RSA is disabled.
  71 #endif
  72
  73 typedef struct rsa_st RSA;
  74
  75 typedef struct rsa_meth_st
  76         {
  77         const char *name;
  78         int (*rsa_pub_enc)(int flen,unsigned char *from,unsigned char *to,
  79                            RSA *rsa,int padding);
  80         int (*rsa_pub_dec)(int flen,unsigned char *from,unsigned char *to,
  81                            RSA *rsa,int padding);
  82         int (*rsa_priv_enc)(int flen,unsigned char *from,unsigned char *to,
  83                             RSA *rsa,int padding);
  84         int (*rsa_priv_dec)(int flen,unsigned char *from,unsigned char *to,
  85                             RSA *rsa,int padding);
  86         int (*rsa_mod_exp)(BIGNUM *r0,BIGNUM *I,RSA *rsa); /* Can be null */
  87         int (*bn_mod_exp)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
  88                           const BIGNUM *m, BN_CTX *ctx,
  89                           BN_MONT_CTX *m_ctx); /* Can be null */
  90         int (*init)(RSA *rsa);          /* called at new */
  91         int (*finish)(RSA *rsa);        /* called at free */
  92         int flags;                      /* RSA_METHOD_FLAG_* things */
  93         char *app_data;                 /* may be needed! */
  94         } RSA_METHOD;
  95
  96 struct rsa_st
  97         {
  98         /* The first parameter is used to pickup errors where
  99          * this is passed instead of aEVP_PKEY, it is set to 0 */
 100         int pad;
 101         int version;
 102         RSA_METHOD *meth;
 103         BIGNUM *n;
 104         BIGNUM *e;
 105         BIGNUM *d;
 106         BIGNUM *p;
 107         BIGNUM *q;
 108         BIGNUM *dmp1;
 109         BIGNUM *dmq1;
 110         BIGNUM *iqmp;
 111         /* be careful using this if the RSA structure is shared */
 112         CRYPTO_EX_DATA ex_data;
 113         int references;
 114         int flags;
 115
 116         /* Used to cache montgomery values */
 117         BN_MONT_CTX *_method_mod_n;
 118         BN_MONT_CTX *_method_mod_p;
 119         BN_MONT_CTX *_method_mod_q;
 120
 121         /* all BIGNUM values are actually in the following data, if it is not
 122          * NULL */
 123         char *bignum_data;
 124         BN_BLINDING *blinding;
 125         };
 126
 127 #define RSA_3   0x3L
 128 #define RSA_F4  0x10001L
 129
 130 #define RSA_METHOD_FLAG_NO_CHECK        0x01 /* don't check pub/private match */
 131
 132 #define RSA_FLAG_CACHE_PUBLIC           0x02
 133 #define RSA_FLAG_CACHE_PRIVATE          0x04
 134 #define RSA_FLAG_BLINDING               0x08
 135 #define RSA_FLAG_THREAD_SAFE            0x10
 136 /* This flag means the private key operations will be handled by rsa_mod_exp
 137  * and that they do not depend on the private key components being present:
 138  * for example a key stored in external hardware. Without this flag bn_mod_exp
 139  * gets called when private key components are absent.
 140  */
 141 #define RSA_FLAG_EXT_PKEY               0x20
 142
 143 #define RSA_PKCS1_PADDING       1
 144 #define RSA_SSLV23_PADDING      2
 145 #define RSA_NO_PADDING          3
 146 #define RSA_PKCS1_OAEP_PADDING  4
 147
 148 #define RSA_set_app_data(s,arg)         RSA_set_ex_data(s,0,(char *)arg)
 149 #define RSA_get_app_data(s)             RSA_get_ex_data(s,0)
 150
 151 RSA *   RSA_new(void);
 152 RSA *   RSA_new_method(RSA_METHOD *method);
 153 int     RSA_size(RSA *);
 154 RSA *   RSA_generate_key(int bits, unsigned long e,void
 155                 (*callback)(int,int,void *),void *cb_arg);
 156 int     RSA_check_key(RSA *);
 157         /* next 4 return -1 on error */
 158 int     RSA_public_encrypt(int flen, unsigned char *from,
 159                 unsigned char *to, RSA *rsa,int padding);
 160 int     RSA_private_encrypt(int flen, unsigned char *from,
 161                 unsigned char *to, RSA *rsa,int padding);
 162 int     RSA_public_decrypt(int flen, unsigned char *from,
 163                 unsigned char *to, RSA *rsa,int padding);
 164 int     RSA_private_decrypt(int flen, unsigned char *from,
 165                 unsigned char *to, RSA *rsa,int padding);
 166 void    RSA_free (RSA *r);
 167
 168 int     RSA_flags(RSA *r);
 169
 170 void RSA_set_default_method(RSA_METHOD *meth);
 171 RSA_METHOD *RSA_get_default_method(void);
 172 RSA_METHOD *RSA_get_method(RSA *rsa);
 173 RSA_METHOD *RSA_set_method(RSA *rsa, RSA_METHOD *meth);
 174
 175 /* This function needs the memory locking malloc callbacks to be installed */
 176 int RSA_memory_lock(RSA *r);
 177
 178 /* If you have RSAref compiled in. */
 179 RSA_METHOD *RSA_PKCS1_RSAref(void);
 180
 181 /* these are the actual SSLeay RSA functions */
 182 RSA_METHOD *RSA_PKCS1_SSLeay(void);
 183
 184 void    ERR_load_RSA_strings(void );
 185
 186 RSA *   d2i_RSAPublicKey(RSA **a, unsigned char **pp, long length);
 187 int     i2d_RSAPublicKey(RSA *a, unsigned char **pp);
 188 RSA *   d2i_RSAPrivateKey(RSA **a, unsigned char **pp, long length);
 189 int     i2d_RSAPrivateKey(RSA *a, unsigned char **pp);
 190 #ifndef NO_FP_API
 191 int     RSA_print_fp(FILE *fp, RSA *r,int offset);
 192 #endif
 193
 194 #ifdef HEADER_BIO_H
 195 int     RSA_print(BIO *bp, RSA *r,int offset);
 196 #endif
 197
 198 int i2d_Netscape_RSA(RSA *a, unsigned char **pp, int (*cb)());
 199 RSA *d2i_Netscape_RSA(RSA **a, unsigned char **pp, long length, int (*cb)());
 200 /* Naughty internal function required elsewhere, to handle a MS structure
 201  * that is the same as the netscape one :-) */
 202 RSA *d2i_Netscape_RSA_2(RSA **a, unsigned char **pp, long length, int (*cb)());
 203
 204 /* The following 2 functions sign and verify a X509_SIG ASN1 object
 205  * inside PKCS#1 padded RSA encryption */
 206 int RSA_sign(int type, unsigned char *m, unsigned int m_len,
 207         unsigned char *sigret, unsigned int *siglen, RSA *rsa);
 208 int RSA_verify(int type, unsigned char *m, unsigned int m_len,
 209         unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
 210
 211 /* The following 2 function sign and verify a ASN1_OCTET_STRING
 212  * object inside PKCS#1 padded RSA encryption */
 213 int RSA_sign_ASN1_OCTET_STRING(int type, unsigned char *m, unsigned int m_len,
 214         unsigned char *sigret, unsigned int *siglen, RSA *rsa);
 215 int RSA_verify_ASN1_OCTET_STRING(int type, unsigned char *m, unsigned int m_len,
 216         unsigned char *sigbuf, unsigned int siglen, RSA *rsa);
 217
 218 int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
 219 void RSA_blinding_off(RSA *rsa);
 220
 221 int RSA_padding_add_PKCS1_type_1(unsigned char *to,int tlen,
 222         unsigned char *f,int fl);
 223 int RSA_padding_check_PKCS1_type_1(unsigned char *to,int tlen,
 224         unsigned char *f,int fl,int rsa_len);
 225 int RSA_padding_add_PKCS1_type_2(unsigned char *to,int tlen,
 226         unsigned char *f,int fl);
 227 int RSA_padding_check_PKCS1_type_2(unsigned char *to,int tlen,
 228         unsigned char *f,int fl,int rsa_len);
 229 int RSA_padding_add_PKCS1_OAEP(unsigned char *to,int tlen,
 230                                unsigned char *f,int fl,unsigned char *p,
 231                                int pl);
 232 int RSA_padding_check_PKCS1_OAEP(unsigned char *to,int tlen,
 233                                  unsigned char *f,int fl,int rsa_len,
 234                                  unsigned char *p,int pl);
 235 int RSA_padding_add_SSLv23(unsigned char *to,int tlen,
 236         unsigned char *f,int fl);
 237 int RSA_padding_check_SSLv23(unsigned char *to,int tlen,
 238         unsigned char *f,int fl,int rsa_len);
 239 int RSA_padding_add_none(unsigned char *to,int tlen,
 240         unsigned char *f,int fl);
 241 int RSA_padding_check_none(unsigned char *to,int tlen,
 242         unsigned char *f,int fl,int rsa_len);
 243
 244 int RSA_get_ex_new_index(long argl, char *argp, int (*new_func)(),
 245         int (*dup_func)(), void (*free_func)());
 246 int RSA_set_ex_data(RSA *r,int idx,char *arg);
 247 char *RSA_get_ex_data(RSA *r, int idx);
 248
 249 /* BEGIN ERROR CODES */
 250 /* The following lines are auto generated by the script mkerr.pl. Any changes
 251  * made after this point may be overwritten when the script is next run.
 252  */
 253
 254 /* Error codes for the RSA functions. */
 255
 256 /* Function codes. */
 257 #define RSA_F_MEMORY_LOCK                                100
 258 #define RSA_F_RSA_CHECK_KEY                              123
 259 #define RSA_F_RSA_EAY_PRIVATE_DECRYPT                    101
 260 #define RSA_F_RSA_EAY_PRIVATE_ENCRYPT                    102
 261 #define RSA_F_RSA_EAY_PUBLIC_DECRYPT                     103
 262 #define RSA_F_RSA_EAY_PUBLIC_ENCRYPT                     104
 263 #define RSA_F_RSA_GENERATE_KEY                           105
 264 #define RSA_F_RSA_NEW_METHOD                             106
 265 #define RSA_F_RSA_PADDING_ADD_NONE                       107
 266 #define RSA_F_RSA_PADDING_ADD_PKCS1_OAEP                 121
 267 #define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_1               108
 268 #define RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_2               109
 269 #define RSA_F_RSA_PADDING_ADD_SSLV23                     110
 270 #define RSA_F_RSA_PADDING_CHECK_NONE                     111
 271 #define RSA_F_RSA_PADDING_CHECK_PKCS1_OAEP               122
 272 #define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1             112
 273 #define RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2             113
 274 #define RSA_F_RSA_PADDING_CHECK_SSLV23                   114
 275 #define RSA_F_RSA_PRINT                                  115
 276 #define RSA_F_RSA_PRINT_FP                               116
 277 #define RSA_F_RSA_SIGN                                   117
 278 #define RSA_F_RSA_SIGN_ASN1_OCTET_STRING                 118
 279 #define RSA_F_RSA_VERIFY                                 119
 280 #define RSA_F_RSA_VERIFY_ASN1_OCTET_STRING               120
 281
 282 /* Reason codes. */
 283 #define RSA_R_ALGORITHM_MISMATCH                         100
 284 #define RSA_R_BAD_E_VALUE                                101
 285 #define RSA_R_BAD_FIXED_HEADER_DECRYPT                   102
 286 #define RSA_R_BAD_PAD_BYTE_COUNT                         103
 287 #define RSA_R_BAD_SIGNATURE                              104
 288 #define RSA_R_BLOCK_TYPE_IS_NOT_01                       106
 289 #define RSA_R_BLOCK_TYPE_IS_NOT_02                       107
 290 #define RSA_R_DATA_GREATER_THAN_MOD_LEN                  108
 291 #define RSA_R_DATA_TOO_LARGE                             109
 292 #define RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE                110
 293 #define RSA_R_DATA_TOO_SMALL                             111
 294 #define RSA_R_DATA_TOO_SMALL_FOR_KEY_SIZE                122
 295 #define RSA_R_D_E_NOT_CONGRUENT_TO_1                     123
 296 #define RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY                 112
 297 #define RSA_R_DMP1_NOT_CONGRUENT_TO_D                    124
 298 #define RSA_R_DMQ1_NOT_CONGRUENT_TO_D                    125
 299 #define RSA_R_IQMP_NOT_INVERSE_OF_Q                      126
 300 #define RSA_R_KEY_SIZE_TOO_SMALL                         120
 301 #define RSA_R_NULL_BEFORE_BLOCK_MISSING                  113
 302 #define RSA_R_N_DOES_NOT_EQUAL_P_Q                       127
 303 #define RSA_R_OAEP_DECODING_ERROR                        121
 304 #define RSA_R_PADDING_CHECK_FAILED                       114
 305 #define RSA_R_P_NOT_PRIME                                128
 306 #define RSA_R_Q_NOT_PRIME                                129
 307 #define RSA_R_SSLV3_ROLLBACK_ATTACK                      115
 308 #define RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD 116
 309 #define RSA_R_UNKNOWN_ALGORITHM_TYPE                     117
 310 #define RSA_R_UNKNOWN_PADDING_TYPE                       118
 311 #define RSA_R_WRONG_SIGNATURE_LENGTH                     119
 312
 313 #ifdef  __cplusplus
 314 }
 315 #endif
 316 #endif
 317